4. [2i] Marks) Create null and alternative hypotheses for the following coefcients lz, and ,33 [a] the impact of height on weight based on equation + K=n+1X+E introduced in lecture 3. (h) all the coefficients in Y = n + ,8le + ,3ng + ,3an + E1, where Y is total gasoline need on a particular trip, X1 is miles traveled, X2 is the weight of the car, and X3 is the average Speed traveled. Assmne that yen are not breaking the Speed limit! (c) the impact of the decibel level of the grunt of a shotputter on the length of the throw involved [shotputtm are known to make loud noises when the},r threw, but there is little theoryr about the impact of this yelling en the length of the put}. game all relevant \"nongrunt\" variables are included in the equation